The new communication protocol aims to improve the industry with measurable advantages in terms of efficiency and security.
A new study conducted by Hashlabs, in collaboration with the SRI (Stratum V2 Reference Implementation) team and figures like Matt Corallo, Alejandro De La Torre and others reveals how the Stratum V2 protocol can increase miner profitability compared to the current Stratum V1 standard, used for over a decade.
Speaking to Atlas21, Gabriele Vernetti, Stratum V2 maintainer, declared:
“This first case study demonstrates how much Stratum V2 can help miners as well, securing and increasing their profits, in addition to the rest of the network. It’s just a first study aimed at demonstrating how decentralization can be aligned with the profit dynamics typical of the mining sector.
In the future we will also focus on the benefits for mining pool operators, who can benefit from the protocol’s efficiency to lower their operating costs (such as those for bandwidth used by their servers).
The feedback has been very positive: this first study was a joint work with various market players, including miners and mining pool operators. As SRI we want to continue working together with the entire community as done in this case, becoming a reference point for all actors interested in innovating the Bitcoin mining field”.
The research, based on controlled tests with two identical ASIC S19k Pro, with stock firmware, demonstrates that Stratum V2 can increase net profits by up to 7.4%. For an industry that often operates with 10% margins, this could represent a substantial competitive advantage.
The V2 protocol reduces various inefficiencies that plague the current system. The latency in block switching, that is the waiting time created when a miner must change block template after a new block has been mined on the network, goes from 325 milliseconds to just 1.42 milliseconds, a speed 228 times higher. This translates to about 4.9 hours of completely wasted hash power less per year.
Another problem of modern mining concerns “stale shares” – proofs of work that arrive too late to be remunerated, often due to network latency or inefficient communication. However, not all stale shares depend on inefficiency problems. On average, about 2% are rejected for expected reasons, such as when the share doesn’t reach the minimum difficulty required by the pool. This value is considered normal in the sector. The remaining 98%, instead, is caused by avoidable delays. With Stratum V1, miners lose between 0.1% and 0.2% of their computing power this way. Stratum V2 with Job Declaration completely eliminates this waste, provided that the miner and the pool node have the same level of connectivity. This step could translate into a net profit increase of up to 2% by fully adopting Stratum V2 with Job Declaration.
In the Stratum V2 protocol, the Job Declaration Client (JDC) is software that allows miners to receive mining jobs directly from their local Bitcoin node, that is the block templates to work on. The JDC communicates directly with the miner’s local node, receiving updated data for new block construction and immediately sending them to the mining software via Stratum V2. This allows miners to receive jobs in real time from their own node, without having to wait for them from the pool, reducing latency and the risk of working on obsolete jobs. Furthermore, if the pool allows it, miners can build custom templates choosing which transactions to include in the block.
The research also highlights an often overlooked aspect: the loss of transaction fees. With the Stratum V1 protocol, miners lose about 0.75% of potential fees for each block due to the delay in receiving new jobs. Considering that about 52,560 blocks are mined each year, this loss per block adds up to a total of about 74 bitcoins per year, equivalent to over $8 million at current prices.
Beyond economic advantages, Stratum V2 solves a critical vulnerability of the current system: hashrate hijacking. The V1 protocol doesn’t encrypt communications, allowing attackers to intercept and steal up to 2% of computing power without the miner noticing. The new protocol eliminates this risk through end-to-end encryption and authentication.
According to the study, by reducing latency, optimizing share sending and improving security, Stratum V2 enables a potential net profit increase of 7.4%, derived exclusively from technical improvements.
